Speaker
Dr
Eli Ben Haim
(LPNHE, IN2P3-CNRS, Universities of Paris VI (FR))
Description
We report a measurement of CP violation in the decay B0 --> pi+ pi- pi0 using the full Upsilon(4S) sample of the BABAR experiment. We perform a full time-dependent Dalitz-plot analysis sensitivity to the interference between B0 and B0bar decays, as well as between the intermediate rho --> pi pi resonances. This allows us to extract the CKM unitarity-triangle angle alpha with reduced ambiguity and improved precision. Precise measurement of alpha serves to test the standard model and constrain new physics in B0-B0bar mixing.
We search for decays of the B0 meson to the final states omega omega and omega phi. These flavor-changing-neutral-current decays are sensitive to physics beyond the standard model and thus provide constraints on potential new-physics effects. They may also shed light on the unexpectedly low longitudinal-polarization fraction in the SU(3)-related decay B-->K* phi.
We report studies of B-meson decays to the K* rho and K*f0 final states, where the K* and rho may be charged or neutral. We distinguish between the vector K*(892), the tensor K*_2(1430), and the resonant and nonresonant scalar components. We report first observation or first evidence for some of the modes and analyze the polarization of the vector-vector and vector-tensor components for the observed signals.
Author
Dr
Eli Ben Haim
(LPNHE, IN2P3-CNRS, Universities of Paris VI (FR))
